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authorbellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>2004-05-08 21:03:41 +0000
committerbellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>2004-05-08 21:03:41 +0000
commitf929aad6e397060983d5d61911110ef1e75d4af4 (patch)
treeff05c351a548445324d7d08b8a2a88d13cd9bfff /hw
parente309de25a617b683a86d6a42df4977bde22b8b26 (diff)
MSDOS compatibility mode FPU exception support
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@793 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'hw')
-rw-r--r--hw/pc.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/hw/pc.c b/hw/pc.c
index e1293aad42..239777756f 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -45,6 +45,18 @@ static void ioport80_write(void *opaque, uint32_t addr, uint32_t data)
{
}
+/* MSDOS compatibility mode FPU exception support */
+/* XXX: add IGNNE support */
+void cpu_set_ferr(CPUX86State *s)
+{
+ pic_set_irq(13, 1);
+}
+
+static void ioportF0_write(void *opaque, uint32_t addr, uint32_t data)
+{
+ pic_set_irq(13, 0);
+}
+
/* PC cmos mappings */
#define REG_EQUIPMENT_BYTE 0x14
@@ -371,6 +383,8 @@ void pc_init(int ram_size, int vga_ram_size, int boot_device,
/* init basic PC hardware */
register_ioport_write(0x80, 1, 1, ioport80_write, NULL);
+ register_ioport_write(0xf0, 1, 1, ioportF0_write, NULL);
+
vga_initialize(ds, phys_ram_base + ram_size, ram_size,
vga_ram_size);